| Dy 4 Systems Inc.( Ontario ) | Dyax Corp. ( Cambridge, MA ) | DYCOM IDENTITY, LLC ( Palm Beach Gardens, FL ) |
| Dy 4 Systems Ltd.( Kanata ) | DYAX Corporation | DYCOM TECHNOLOGY, LLC ( Palm Beach Gardens, FL ) |
| Dy-04 Systems Ltd. | Dyax Corporation ( Cambridge, MA ) | DYCONEX AG ( Basserdorf, CH ) |
| Dyadic | Dyax, Corporation ( Cambridge, MA ) | Dyconex AG( Bassersdorf ) |
| Dyadic International | Dyband Corporation( Ottawa ) | Dyconex AG ( Zurich, CH ) |
| Dyadic International( IT ) | Dybsetter Gerald L. ( San Jose, CA ) | Dyconex Patente AG( Zug ) |
| Dyadic International, Inc. ( Jupiter, FL ) | Dybuster AG( Zurich ) | Dyconex Patente AG ( Zug, CH ) |
| Dyamed Biotech Pte Ltd ( Singapore, SG ) | DYBUSTER AG ( Zurich, CH ) | Dye Precision, Inc. ( San Diego, CA ) |
| Dyanco | Dycam Inc. ( Chatsworth, CA ) | Dye Products, Inc. ( San Diego, CA ) |
| Dyansys, Inc. ( Burlingame, CA ) | Dyckerhoff & Widmann AG ( Munich, DE ) | Dyecontrol By Loris Bellini E. Zaitex S.r.l. |
| DYAPASON S.R.L. | Dyckerhoff & Widmann AG of Munich | Dyecontrol By Loris Bellini E. Zaitex S.r.l.( JP ) |
| Dyapason S.R.L.( Castel Goffredo ) | Dyckerhoff & Widmann Aktiengesellschaft ( Munich, DE ) | Dyer Poultry Supply, Inc. ( Cullman, AL ) |
| Dyapason S.R.L. ( Castel Goffredo, IT ) | Dyckerhoff AG | Dyers Road Re-Manufacturing and Imports Limited( Christchurch ) |
| Dyaptive Systems Incorporated | Dyco Associates, Inc. ( West Chicago, IL ) | Dyes GmbH |
| Dyax Copr., a Delaware corporation | Dyco Europe S.R.L ( Chieti, IT ) | Dyes GmbH Buromobelfabrik |
| Dyax Corp ( Cambridge, MA ) | DYCO INC. ( Bloomsburg, PA ) | Dyes GmbH Buromobelwerk |
| DYAX CORP. | Dyco, Inc. ( Bloomsburg, PA ) | |
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